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1 | #ifndef BABELTRACE_PLUGINS_COMMON_PARAM_VALIDATION_PARAM_VALIDATION_H |
2 | #define BABELTRACE_PLUGINS_COMMON_PARAM_VALIDATION_PARAM_VALIDATION_H | |
3 | ||
4 | /* | |
5 | * Copyright 2019 EfficiOS Inc. | |
6 | * | |
7 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
8 | * of this software and associated documentation files (the "Software"), to deal | |
9 | * in the Software without restriction, including without limitation the rights | |
10 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
11 | * copies of the Software, and to permit persons to whom the Software is | |
12 | * furnished to do so, subject to the following conditions: | |
13 | * | |
14 | * The above copyright notice and this permission notice shall be included in | |
15 | * all copies or substantial portions of the Software. | |
16 | * | |
17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
20 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
21 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
22 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
23 | * SOFTWARE. | |
24 | */ | |
25 | ||
26 | #include <babeltrace2/babeltrace.h> | |
27 | #include <glib.h> | |
28 | ||
29 | #include <stdio.h> /* For __MINGW_PRINTF_FORMAT. */ | |
30 | ||
31 | #ifdef __MINGW_PRINTF_FORMAT | |
32 | # define BT_PRINTF_FORMAT __MINGW_PRINTF_FORMAT | |
33 | #else | |
34 | # define BT_PRINTF_FORMAT printf | |
35 | #endif | |
36 | ||
37 | struct bt_param_validation_context; | |
38 | struct bt_param_validation_value_descr; | |
39 | ||
40 | #define BT_PARAM_VALIDATION_MAP_VALUE_ENTRY_END { NULL, 0, {} } | |
41 | ||
42 | struct bt_param_validation_map_value_descr { | |
43 | const struct bt_param_validation_map_value_entry_descr *entries; | |
44 | }; | |
45 | ||
46 | #define BT_PARAM_VALIDATION_INFINITE UINT64_MAX | |
47 | ||
48 | struct bt_param_validation_array_value_descr { | |
49 | uint64_t min_length; | |
50 | uint64_t max_length; /* Use BT_PARAM_VALIDATION_INFINITE if there's no max. */ | |
51 | const struct bt_param_validation_value_descr *element_type; | |
52 | }; | |
53 | ||
54 | struct bt_param_validation_string_value_descr { | |
55 | /* NULL-terminated array of choices. Unused if NULL. */ | |
56 | const char **choices; | |
57 | }; | |
58 | ||
59 | enum bt_param_validation_status { | |
60 | BT_PARAM_VALIDATION_STATUS_OK = 0, | |
61 | BT_PARAM_VALIDATION_STATUS_MEMORY_ERROR = -1, | |
62 | BT_PARAM_VALIDATION_STATUS_VALIDATION_ERROR = -2, | |
63 | }; | |
64 | ||
65 | typedef enum bt_param_validation_status | |
66 | (bt_param_validation_func)(const bt_value *value, | |
67 | struct bt_param_validation_context *); | |
68 | ||
69 | struct bt_param_validation_value_descr { | |
70 | bt_value_type type; | |
71 | ||
72 | /* Additional checks dependent on the type. */ | |
73 | union { | |
74 | struct bt_param_validation_array_value_descr array; | |
75 | struct bt_param_validation_map_value_descr map; | |
76 | struct bt_param_validation_string_value_descr string; | |
77 | }; | |
78 | ||
79 | /* | |
80 | * If set, call this function, which is responsible of validating the | |
81 | * value. The other fields are ignored. | |
82 | * | |
83 | * If validation fails, this function must call | |
84 | * `bt_param_validation_error` with the provided context | |
85 | * to set the error string. | |
86 | */ | |
87 | bt_param_validation_func *validation_func; | |
88 | }; | |
89 | ||
90 | #define BT_PARAM_VALIDATION_MAP_VALUE_ENTRY_OPTIONAL true | |
91 | #define BT_PARAM_VALIDATION_MAP_VALUE_ENTRY_MANDATORY false | |
92 | ||
93 | struct bt_param_validation_map_value_entry_descr { | |
94 | const char *key; | |
95 | bool is_optional; | |
96 | ||
97 | const struct bt_param_validation_value_descr value_descr; | |
98 | }; | |
99 | ||
100 | enum bt_param_validation_status bt_param_validation_validate( | |
101 | const bt_value *params, | |
102 | const struct bt_param_validation_map_value_entry_descr *entries, | |
103 | gchar **error); | |
104 | ||
105 | __attribute__((format(BT_PRINTF_FORMAT, 2, 3))) | |
106 | enum bt_param_validation_status bt_param_validation_error( | |
107 | struct bt_param_validation_context *ctx, | |
108 | const char *format, ...); | |
109 | ||
110 | #endif /* BABELTRACE_PLUGINS_COMMON_PARAM_VALIDATION_PARAM_VALIDATION_H */ |